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| INFO. |
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| Send Flash Event |
| Default is NO. If set to yes, flash will be sent as DTMF event. |
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| Enable Call Features |
| Default is Yes. Advance call features and feature codes functions are |
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| supported locally |
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| Use | If this parameter is set to “Yes”, user will be able to make Bellcore style |
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| conference. *23 will be disabled. |
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| Offhook |
| This parameter allows a user to configure a User ID or extension number to be |
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| automatically dialed upon offhook. Please note that only the user part of a SIP |
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| address needs to be entered here. The |
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| “@” and the host portion of the corresponding SIP address. |
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| NOTE: Please write down the IP address of the ATA if you use this feature as |
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| it will disable the IVR and the only way to access the |
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| configuration page. |
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| SIP Extension to notify SIP server that the unit is behind the NAT/Firewall. |
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| Disable Call Waiting |
| Default is No. User can use * code to use this feature per call basis. |
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| NAT Traversal |
| This parameter defines whether the |
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| activated or not. If activated (by choosing “Yes”) and a STUN server is also |
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| specified, then the |
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| specification. Under this mode, the embedded STUN client inside the |
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| will attempt to detect if and what type of firewall/NAT it is sitting behind through |
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| communication with the specified STUN server. If the detected NAT is a Full |
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| Cone, Restricted Cone, or a |
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| use its mapped public IP address and port in all of its SIP and SDP messages. |
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| If the NAT Traversal field is set to “Yes” with no specified STUN server, the |
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| (with no payload data) to the SIP server to keep the “hole” on the NAT open. |
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| Preferred Vocoder |
| The |
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| G.711 A/Ulaw,G.723.1, G.726, G.729A/B, iLBC. |
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| A user can configure codecs in a preference list that will be included with the |
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| same preference order in SDP message. |
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| Voice Frames per TX |
| This field contains the number of voice frames to be transmitted in a single |
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| packet. When setting this value, the user should be aware of the requested |
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| packet time (used in SDP message) as a result of configuring this parameter. |
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| This parameter is associated with the first codec in the above codec |
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| Preference List or the actual used payload type negotiated between the 2 |
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| conversation parties at run time. |
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| e.g., if the first codec is configured as G723 and the “Voice Frames per TX” is |
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| set to be 2, then the “ptime” value in the SDP message of an INVITE request |
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| will be 60ms because each G723 voice frame contains 30ms of audio. |
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| Similarly, if this field is set to be 2 and if the first codec chosen is G729 or |
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| G711 or G726, then the “ptime” value in the SDP message of an INVITE |
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| request will be 20ms. |
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| If the configured voice frames per TX exceeds the maximum allowed value, |
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| the |
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| corresponding first codec choice. The maximum value for PCM is 10(x10ms) |
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| frames; for G726, it is 20 (x10ms) frames; for G723, it is 32 (x30ms) frames; |
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| for G729/G728, 64 (x10ms) and 64 (x2.5ms) frames respectively. Please be |
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| careful when massage those parameters. |
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| G723 Rate: | Encoding rate for G723 codec. By default, 6.3kbps rate is set. |
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| iLBC frame size: |
| iLBC packet frame size. Default is 20ms. For Asterisk PBX, 30ms might need |
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| to be set. |
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| iLBC payload type: |
| Payload type for iLBC. Default value is 97. The valid range is between 96 and |
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| Grandstream Networks, Inc. | Page 24 of 34 |
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| Firmware 1.0.3.64 | Last Updated: 2/2007 |
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